Module frame 

Stream preamble: [0x57][kind][header_len varint][CBOR header].

Every unidirectional stream in both directions starts with this preamble. Parsing it is the first thing that touches hostile bytes, so it is the place where the header size cap is enforced — before any allocation.

Structs

Preamble

A parsed stream preamble.

Enums

FrameKind

What a stream carries.

PreambleError

Why a preamble was rejected.

Constants

MAGIC

First byte of every weida stream: ASCII W.

MAX_PREAMBLE_LEN

Longest possible preamble: magic, kind and an 8-byte varint.

Functions

encode_frame

Builds a complete header-only frame: preamble followed by header.

encode_preamble

Appends a preamble for header_len bytes of header to out.

parse_preamble

Parses a preamble from the front of input.

preamble_bytes

A preamble for header_len bytes of header, and how many of the returned bytes are it.